Home » All Products » Hydroponics » Meters & Solutions » HM Digital Replacement pH Sensor Probe for HM-500
HM-500 Replacement pH probe
2 Meter / 80 inch cable length
Includes pH storage solution, 6-month warranty
GroStar by Apera EC Calibration Kit (2.77 EC, 8 oz. each) • 2.77 EC conductivity standard calibration solution• Used as a reference or ...
$10.37
Available in 230 ml bottles and 20 ml sachets. Traditional buffer solutions are packed in 220 ml leak-proof bottles and ...
$11.03
Ideal for commercial use, the TDS-3 includes a carrying case with belt clip. It is highly efficent and accurate due ...
$30.22
Gardeners can conveniently test their moisture, light, and pH levels with the handy Active Air 3-Way Meter. Moisture readings register ...
$7.60